BDH is renown in the scientific community for their acids and solvents. Turn to BDH for your laboratory chemical needs. We stock a line of reference-grade BDH pH buffers. BDH chemical buffers are available as colored solutions. They are all compared against and certified traceable to NIST Standard Reference Materials. A BDH buffer solution can be used in conjunction with our line of pH Meters to measure and maintain pH balance in solutions.